/* =========================================================================
   ArcTec Engenharia - Design System & Base Styles
   ========================================================================= */

:root {
    /* Color Palette */
    --primary-color: #111111;
    /* Preto principal */
    --primary-light: #2a2a2a;
    --accent-color: #e00000;
    /* Vermelho Logo */
    --accent-hover: #ff1a1a;

    --bg-light: #f4f4f4;
    --bg-white: #ffffff;
    --bg-dark: #080808;

    --text-main: #2b2b2b;
    --text-muted: #555555;
    --text-light: #f1f5f9;

    --border-color: #e2e8f0;

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Dimensions */
    --header-height: 80px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Base Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    line-height: 1.2;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Typography Utilities */
.text-center {
    text-align: center;
}

.text-white {
    color: var(--text-light) !important;
}

.text-light {
    color: rgba(255, 255, 255, 0.8);
}

.highlight-text {
    color: var(--accent-color);
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Layout & Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-padding {
    padding: 5rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

/* Section Headers */
.section-header {
    margin-bottom: 3rem;
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
}

.section-header.text-center .section-desc {
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.btn-block {
    width: 100%;
    padding: 1rem;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(224, 0, 0, 0.3);
}

.btn-outline {
    background-color: transparent;
    border-color: #fff;
    color: #fff;
}

.btn-outline:hover {
    background-color: #fff;
    color: var(--primary-color);
}

/* =========================================================================
   Components
   ========================================================================= */

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: #ffffff;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.header.scrolled {
    height: 70px;
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.logo-img {
    height: 70px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-normal);
}

.header.scrolled .logo-img {
    height: 50px;
}

.footer-logo {
    background-color: var(--bg-white);
    padding: 10px;
    border-radius: var(--border-radius-sm);
    display: inline-flex;
}

.navbar {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--primary-light);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.btn-nav {
    background-color: var(--primary-color);
    color: #fff;
    padding: 0.6rem 1.25rem;
}

.btn-nav:hover {
    background-color: var(--accent-color);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&q=80') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.5) 100%);
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 700px;
    color: #fff;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background-color: rgba(224, 0, 0, 0.15);
    border: 1px solid var(--accent-color);
    border-radius: 50px;
    color: var(--accent-color);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: #fff;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background-color: var(--primary-color);
    color: #fff;
    padding: 1.5rem;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    border-bottom: 4px solid var(--accent-color);
}

.experience-badge i {
    font-size: 2.5rem;
    color: var(--accent-color);
}

.exp-text {
    display: flex;
    flex-direction: column;
}

.exp-text strong {
    font-size: 1.25rem;
    font-family: var(--font-heading);
}

.exp-text span {
    font-size: 0.85rem;
    color: #cbd5e1;
}

.about-text {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.about-strong {
    color: var(--primary-color);
}

.about-list {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.about-list i {
    color: var(--accent-color);
    font-size: 1.25rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--bg-white);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border-bottom: 3px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--accent-color);
}

.service-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    transition: var(--transition-normal);
}

.service-card:hover .service-icon {
    background-color: var(--primary-color);
    color: var(--accent-color);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-text {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.service-link i {
    font-size: 0.75rem;
    transition: var(--transition-fast);
}

.service-link:hover i {
    transform: translateX(5px);
    color: var(--accent-color);
}

/* Differentials */
.differentials {
    background-color: var(--primary-color);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.differentials::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-color: var(--primary-light);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.5;
    z-index: 1;
}

.differentials-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.diff-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

.diff-item {
    display: flex;
    gap: 1.5rem;
}

.diff-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #fff;
}

.diff-text h4 {
    color: #fff;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.diff-text p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.img-wrapper {
    position: relative;
}

.img-wrapper img {
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
}

.glass-card {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem;
    border-radius: var(--border-radius-md);
    width: 300px;
}

.glass-card i {
    color: var(--accent-color);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.glass-card p {
    font-weight: 500;
    font-style: italic;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.glass-card span {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
}

/* Contact */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    background-color: var(--bg-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.contact-info {
    background-color: var(--bg-light);
    padding: 4rem 3rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 3rem;
}

.method-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.method-icon {
    width: 45px;
    height: 45px;
    background-color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    font-size: 1.1rem;
}

.method-details {
    display: flex;
    flex-direction: column;
}

.method-details span {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.method-details strong {
    color: var(--primary-color);
    font-size: 1.05rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icon:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
}

.contact-form-container {
    padding: 4rem 3rem;
}

.form-title {
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group.row {
    display: flex;
    gap: 1.5rem;
}

.col-half {
    flex: 1;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    background-color: var(--bg-light);
    transition: var(--transition-fast);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(224, 0, 0, 0.1);
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: #fff;
    padding-top: 4rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    margin-top: 1rem;
    max-width: 400px;
    font-size: 0.9rem;
}

.footer-title {
    color: #fff;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.developer-signature {
    text-align: center;
    font-size: 0.8rem;
    margin-top: 1.5rem;
    color: var(--text-muted);
}

.developer-signature a {
    color: #4169E1;
    /* Royal Blue */
    font-weight: 600;
}

.developer-signature a:hover {
    color: #1a41b3;
    text-decoration: underline;
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 1.5rem 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

.footer-legal a:hover {
    color: #fff;
}

/* Floating Action Button */
.fab-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 10px rgba(37, 211, 102, 0.4);
    z-index: 99;
    animation: pulse 2s infinite;
}

.fab-whatsapp:hover {
    background-color: #128c7e;
    transform: scale(1.1);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Animations / Reveals */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s ease;
}

.reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.8s ease;
}

.active.reveal-up,
.active.reveal-left,
.active.reveal-right {
    opacity: 1;
    transform: translate(0);
}

.fade-up {
    animation: fadeUpAnim 1s ease forwards;
}

@keyframes fadeUpAnim {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 992px) {
    .section-title {
        font-size: 2rem;
    }

    .about-grid,
    .differentials-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .differentials::before {
        width: 100%;
    }

    .glass-card {
        bottom: -20px;
        left: 20px;
        width: calc(100% - 40px);
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .contact-info {
        padding: 3rem 2rem;
    }

    .contact-form-container {
        padding: 3rem 2rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-white);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 2rem;
        gap: 1.5rem;
        transition: var(--transition-normal);
    }

    .nav-list.active {
        left: 0;
    }

    .mobile-toggle {
        display: block;
    }

    .btn-nav {
        display: none;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .form-group.row {
        flex-direction: column;
        gap: 1.5rem;
    }

    .footer-bottom .container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}